1. Get your application
in production...
...and keep your
weekends free
Martijn Dashorst
Topicus

2. 6 WAYS TO KEEP YOUR JOB
OUT OF YOUR WEEKEND

3. 1. USE WICKET TESTER

4. WICKETTESTER
• Test components directly, or their markup
• Runs tests without starting server
• Ajax testing (server side)
• Runs in IDE, ant, maven builds
• Achieves high code coverage

5. HELLOWORLD TEST
@Test
public void labelContainsHelloWorld() {
}

6. HELLOWORLD TEST
@Test
public void labelContainsHelloWorld() {
WicketTester tester = new WicketTester();
}

7. HELLOWORLD TEST
@Test
public void labelContainsHelloWorld() {
WicketTester tester = new WicketTester();
tester.startPage(HelloWorld.class);
}

8. HELLOWORLD TEST
@Test
public void labelContainsHelloWorld() {
WicketTester tester = new WicketTester();
tester.startPage(HelloWorld.class);
tester.assertLabel(quot;messagequot;, quot;Hello, World!quot;);
}

9. LINK TEST
@Test
public void countingLinkClickTest() {
}

10. LINK TEST
@Test
public void countingLinkClickTest() {
WicketTester tester = new WicketTester();
}

11. LINK TEST
@Test
public void countingLinkClickTest() {
WicketTester tester = new WicketTester();
tester.startPage(LinkCounter.class);
}

12. LINK TEST
@Test
public void countingLinkClickTest() {
WicketTester tester = new WicketTester();
tester.startPage(LinkCounter.class);
tester.assertModelValue(quot;labelquot;, 0);
}

13. LINK TEST
@Test
public void countingLinkClickTest() {
WicketTester tester = new WicketTester();
tester.startPage(LinkCounter.class);
tester.assertModelValue(quot;labelquot;, 0);
tester.clickLink(quot;linkquot;);
}

14. LINK TEST
@Test
public void countingLinkClickTest() {
WicketTester tester = new WicketTester();
tester.startPage(LinkCounter.class);
tester.assertModelValue(quot;labelquot;, 0);
tester.clickLink(quot;linkquot;);
tester.assertModelValue(quot;labelquot;, 1);
}

15. NAVIGATION TEST
@Test
public void navigateToSecondPage() {
}

16. NAVIGATION TEST
@Test
public void navigateToSecondPage() {
WicketTester tester = new WicketTester();
tester.startPage(new FirstPage());
}

17. NAVIGATION TEST
@Test
public void navigateToSecondPage() {
WicketTester tester = new WicketTester();
tester.startPage(new FirstPage());
tester.clickLink(quot;linkquot;);
}

18. NAVIGATION TEST
@Test
public void navigateToSecondPage() {
WicketTester tester = new WicketTester();
tester.startPage(new FirstPage());
tester.clickLink(quot;linkquot;);
tester.assertRenderedPage(SecondPage.class);
}

19. 2. PAGE CHECK

20. PAGES IN EDUARTE
• Pages must have @PageInfo annotation
• Policy file must contain existing pages
• All secure pages must be in the policy file

21. PAGE INFO ANNOTATION
@PageInfo(
title = quot;Intake stap 1 van 4quot;,
menu = {quot;Deelnemer > intakequot;}
)
public class IntakePersonalia extends IntakeWizardPage
{
...
}

22. Our build fails for any
of these problems...

23. 3. ENTITY CHECKER

24. Storing Hibernate entities in
your pages is bad...
...mkay

25. WICKET SERIALIZABLE
CHECKER
• Runs when page is serialized
• Tries to find non-serializable objects attached to page
• Helpful stacktraces

26. EXAMPLE STACKTRACE
Unable to serialize class: nl.topicus.project.entities.personen.Persoon
Field hierarchy is:
2 [class=nl.topicus.project.SomePage, path=2]
nl.topicus.project.entities.personen.Persoon
nl.topicus.project.SomePage.persoon <----- Entity

27. WICKET SERIALIZER CHECK
public class TopicusRequestCycle extends WebRequestCycle {
public void onEndRequest() {
Page requestPage = getRequest().getPage();
testDetachedObjects(requestPage);
if (getRequestTarget() instanceof IPageRequestTarget) {
Page responsePage = getRequestTarget().getPage();
if (responsePage != requestPage) {
testDetachedObjects(responsePage);
}
}
}
}

28. WICKET SERIALIZER CHECK
if (page == null || page.isErrorPage()) {
return;
}
try {
checker = new EntityAndSerializableChecker(
new NotSerializableException());
checker.writeObject(page);
} catch (Exception e) {
log.error(quot;Couldn't serialize: quot; + page + quot;, error: quot; + ex);
}

29. WICKET SERIALIZER CHECK
private void check(Object obj) {
Class cls = obj.getClass();
nameStack.add(simpleName);
traceStack.add(new TraceSlot(obj, fieldDescription));
if (!(obj instanceof Serializable) && (!Proxy.isProxyClass(cls)))
{
throw new WicketNotSerializableException(/* ... */);
}
... complicated stuff ...
}

30. WICKET SERIALIZER CHECK
if (!(obj instanceof Serializable) && (!Proxy.isProxyClass(cls))) {
throw new WicketNotSerializableException(/* .. */)
.toString(), exception);
}
if (obj instanceof IdObject) {
Serializable id = ((IdObject) obj).getIdAsSerializable();
if (id != null && !(id instanceof Long && ((Long) id) <= 0)) {
throw new WicketContainsEntityException(/* ... */);
}
}
... complicated stuff ...

31. To ensure developers
have to fix it immediately...
...an Ajax callback checks for these
errors and renders an ErrorPage

32. 4. MARKUP VALIDATOR

33. VALID MARKUP...
• Nobody cares about valid markup
• XHTML is dead

34. INVALID MARKUP...
do care
• Browsers
• Subtle differences between browser DOM handling
• Ajax becomes a pain

35. WICKET STUFF HTML
VALIDATOR
• http://github.com/dashorst/wicket-stuff-markup-validator
• Based on: http://tuckey.org/validation

36. ADD DEPENDENCY TO POM
<dependency>
<groupId>org.wicketstuff</groupId>
<artifactId>htmlvalidator</artifactId>
<version>1.0</version>
<scope>test</scope>
</dependency>

37. ADD FILTER TO WEBAPP
public class MyApplication extends WebApplication {
// ...
@Override
protected void init() {
// only enable the markup filter in DEVELOPMENT mode
if(DEVELOPMENT.equals(getConfigurationType())) {
getRequestCycleSettings()
.addResponseFilter(new HtmlValidationResponseFilter());
}
}
}

38. DEFINE PROPER DOCTYPE
<!DOCTYPE html PUBLIC quot;-//W3C//DTD XHTML 1.0 Transitional//EN
quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtdquot;>
<html xmlns=quot;http://www.w3.org/1999/xhtmlquot;>
<head>
<title>Foo</title>
</head>
<body>
</body>
</html>

39. ... AND ENDURE THE HORRORS
OF VALID MARKUP

40. 5. REQUESTLOGGER

41. REQUEST LOGGER
• HTTPD logs are (mostly) useless for Wicket applications
• POST /vocus/app?wicket:interface=:4:lijst::IBehaviorListener...
• GET /vocus/app?wicket:interface=:1084::
• RequestLogger provides decoded information:
• Page, Listener, RequestTarget, SessionID, etc.

42. 14:00:19 time=101,
event=Interface[
target:DefaultMenuLink(menu:personalia:dropitem
page: nl.topicus.gui.student.ToonPersonaliaPage(4)
interface: ILinkListener:onLinkClicked],
response=PageRequest[
nl.topicus.gui.student.ToonLeerlingRelatiesPage(6)]
sessioninfo=[
sessionId=D574D35FF49C047E4F290FE
clientInfo=ClientProperties{
remoteAddress=192.0.2.50,
browserVersionMajor=7,
browserInternetExplorer=true},
organization=Demo School
username=administrator],
sessionstart=Fri Dec 14 13:59:14 CET 2008,
requests=14,
totaltime=3314

43. REQUEST LOST PARSER

44. 6. RABID MONITORING

46. NABAZTAG
• Availability of production applications
• Performance of production applications
• Hudson builds
• Issue tracker

47. THANK YOU!